Ok, I should give this feature a try. But I can't really think of specific !10 or 20 accounts I would recommend to all new users, especially as we are general purpose instance, not single major topic instance.
Instead, I would just like to make SOME of my Lists (which I use heavily to categorize the content I discover) shareable as a whole (which they in fact are, but using CSV, which is easy for me as programmer and PC user, but quite cumbersome for typical smartphone user...)
So instead of recommended accounts (10 or 20 is not enough), we would have 10 or 20 recommended "starter packs", lists of many accounts to follow at once. And also... existing users should be able to see these share or exported lists in their "Lists" or Explore section (simply somewhere in between, maybe even as subsection of Live channels... finding right place for new feature in GUI is tricky).
And instances could differentiate one from another by these starter lists for newbies being VERY different...
Definitely, these lists would be man made (moderator already have some power anyway), so it is not algorithm at all. It is less algorithm based than Explore. And it would be completely voluntary feature, not enforced on anyone.